From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Future suspension improvements, investigations into ride comfort issues, and specifics on 25 HP cars.
| Identifier | ExFiles\Box 47\2\ Scan371 | |
| Date | 1st November 1930 | |
| -4- Hs{Lord Ernest Hives - Chair}/AH.S/ML.1.11.30.Contd. As regards future improvements we are continually striving to evolve a suspension that will more nearly suit all conditions to be met with. Our immediate future experiments on these lines are - (a) Lower rating front springs to reduce pitching. (b) Lower rating rear springs to give softer riding in combination with (c) Higher damper loading to reduce the extra movement given by lower rating springs for the same load, drilled valves may, or may not help. (d) Hartford friction dampers to give good road holding qualities at high speeds. We are carrying out investigations of these lines on Sg{Arthur F. Sidgreaves - MD}'s. car 58-GN. Our line of investigations will be helped considerably if the Depots and C.W.H. will keep us in constant touch with the actual type of complaints to be dealt with, i.e. hard riding, Pitching, rolling, sea-sickness; with particular reference to the type and weight of body in each case and conditions of car use, the classification "Springs not comfortable" is very vague and can cover many types of complaint. 25 HP. CARS. There are always fewer springing complaints on this chassis than on the larger models. This may be due to the fact that they are more generally owner driven, the front seat riding being much better than the rear. We have recently incorporated spring lubrication in the Bijur system (S. series onwards); this improvement will avoid many complaints of uncomfortable riding by eliminating a variable factor. Greasing springs on cars (without this | ||